20 Dec, 2011
1 commit
-
…x/kernel/git/tj/misc into core/memblock
15 Dec, 2011
1 commit
-
The "(insn & 0x01800000) != 0x01800000" test matches 'restore'
but that is a legitimate place to see the %lo() part of a 32-bit
symbol relocation, particularly in tail calls.Signed-off-by: David S. Miller
Tested-by: Sergei Trofimovich
09 Dec, 2011
3 commits
-
sparc doesn't access early_node_map[] directly and enabling
HAVE_MEMBLOCK_NODE_MAP is trivial - replacing add_active_range() calls
with memblock_set_node() and selecting HAVE_MEMBLOCK_NODE_MAP is
enough.-v2: Use select in Kconfig instead as suggested by Sam Ravnborg.
Signed-off-by: Tejun Heo
Acked-by: "David S. Miller"
Cc: Sam Ravnborg
Cc: sparclinux@vger.kernel.org -
The only function of memblock_analyze() is now allowing resize of
memblock region arrays. Rename it to memblock_allow_resize() and
update its users.* The following users remain the same other than renaming.
arm/mm/init.c::arm_memblock_init()
microblaze/kernel/prom.c::early_init_devtree()
powerpc/kernel/prom.c::early_init_devtree()
openrisc/kernel/prom.c::early_init_devtree()
sh/mm/init.c::paging_init()
sparc/mm/init_64.c::paging_init()
unicore32/mm/init.c::uc32_memblock_init()* In the following users, analyze was used to update total size which
is no longer necessary.powerpc/kernel/machine_kexec.c::reserve_crashkernel()
powerpc/kernel/prom.c::early_init_devtree()
powerpc/mm/init_32.c::MMU_init()
powerpc/mm/tlb_nohash.c::__early_init_mmu()
powerpc/platforms/ps3/mm.c::ps3_mm_add_memory()
powerpc/platforms/embedded6xx/wii.c::wii_memory_fixups()
sh/kernel/machine_kexec.c::reserve_crashkernel()* x86/kernel/e820.c::memblock_x86_fill() was directly setting
memblock_can_resize before populating memblock and calling analyze
afterwards. Call memblock_allow_resize() before start populating.memblock_can_resize is now static inside memblock.c.
Signed-off-by: Tejun Heo
Cc: Benjamin Herrenschmidt
Cc: Yinghai Lu
Cc: Russell King
Cc: Michal Simek
Cc: Paul Mundt
Cc: "David S. Miller"
Cc: Guan Xuetao
Cc: "H. Peter Anvin" -
memblock_init() initializes arrays for regions and memblock itself;
however, all these can be done with struct initializers and
memblock_init() can be removed. This patch kills memblock_init() and
initializes memblock with struct initializer.The only difference is that the first dummy entries don't have .nid
set to MAX_NUMNODES initially. This doesn't cause any behavior
difference.Signed-off-by: Tejun Heo
Cc: Benjamin Herrenschmidt
Cc: Yinghai Lu
Cc: Russell King
Cc: Michal Simek
Cc: Paul Mundt
Cc: "David S. Miller"
Cc: Guan Xuetao
Cc: "H. Peter Anvin"
29 Nov, 2011
1 commit
-
Conflicts & resolutions:
* arch/x86/xen/setup.c
dc91c728fd "xen: allow extra memory to be in multiple regions"
24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..."conflicted on xen_add_extra_mem() updates. The resolution is
trivial as the latter just want to replace
memblock_x86_reserve_range() with memblock_reserve().* drivers/pci/intel-iommu.c
166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/"
5dfe8660a3d "bootmem: Replace work_with_active_regions() with..."conflicted as the former moved the file under drivers/iommu/.
Resolved by applying the chnages from the latter on the moved
file.* mm/Kconfig
6661672053a "memblock: add NO_BOOTMEM config symbol"
c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option"conflicted trivially. Both added config options. Just
letting both add their own options resolves the conflict.* mm/memblock.c
d1f0ece6cdc "mm/memblock.c: small function definition fixes"
ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()"confliected. The former updates function removed by the
latter. Resolution is trivial.Signed-off-by: Tejun Heo
18 Nov, 2011
1 commit
-
To handle the large physical addresses, just make a simple wrapper
around remap_pfn_range() like MIPS does.Signed-off-by: David S. Miller
07 Nov, 2011
1 commit
-
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
Revert "tracing: Include module.h in define_trace.h"
irq: don't put module.h into irq.h for tracking irqgen modules.
bluetooth: macroize two small inlines to avoid module.h
ip_vs.h: fix implicit use of module_get/module_put from module.h
nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
include: replace linux/module.h with "struct module" wherever possible
include: convert various register fcns to macros to avoid include chaining
crypto.h: remove unused crypto_tfm_alg_modname() inline
uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
pm_runtime.h: explicitly requires notifier.h
linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
miscdevice.h: fix up implicit use of lists and types
stop_machine.h: fix implicit use of smp.h for smp_processor_id
of: fix implicit use of errno.h in include/linux/of.h
of_platform.h: delete needless include
acpi: remove module.h include from platform/aclinux.h
miscdevice.h: delete unnecessary inclusion of module.h
device_cgroup.h: delete needless include
net: sch_generic remove redundant use of
net: inet_timewait_sock doesnt need
...Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in
- drivers/media/dvb/frontends/dibx000_common.c
- drivers/media/video/{mt9m111.c,ov6650.c}
- drivers/mfd/ab3550-core.c
- include/linux/dmaengine.h
03 Nov, 2011
2 commits
-
This avoids duplicating the function in every arch gup_fast.
Signed-off-by: Andrea Arcangeli
Cc: Peter Zijlstra
Cc: Hugh Dickins
Cc: Johannes Weiner
Cc: Rik van Riel
Cc: Mel Gorman
Cc: KOSAKI Motohiro
Cc: Benjamin Herrenschmidt
Cc: David Gibson
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: David Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Up to this point the code assumed old refcounting for hugepages (pre-thp).
This updates the code directly to the thp mapcount tail page refcounting.Signed-off-by: Andrea Arcangeli
Cc: Peter Zijlstra
Cc: Hugh Dickins
Cc: Johannes Weiner
Cc: Rik van Riel
Cc: Mel Gorman
Cc: KOSAKI Motohiro
Cc: Benjamin Herrenschmidt
Cc: David Gibson
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Acked-by: David Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Nov, 2011
3 commits
-
The file mm/extable.c needs module.h for within_module_init(), and
also for search_exception_tables [which arguably could be living somewhere
more appropriate than module.h] - eventually causing this:arch/sparc/mm/extable.c: In function 'trim_init_extable':
arch/sparc/mm/extable.c:74: error: dereferencing pointer to incomplete type
arch/sparc/mm/extable.c:75: error: dereferencing pointer to incomplete type
arch/sparc/mm/extable.c:77: error: implicit declaration of function 'within_module_init'
arch/sparc/mm/extable.c:77: error: dereferencing pointer to incomplete type
arch/sparc/mm/extable.c:78: error: dereferencing pointer to incomplete type
arch/sparc/mm/extable.c:80: error: dereferencing pointer to incomplete type
arch/sparc/mm/extable.c: In function 'search_extables_range':
arch/sparc/mm/extable.c:93: error: implicit declaration of function 'search_exception_tables'The other instances are more straight forward uses of things
like MODULE_* and module_*Signed-off-by: Paul Gortmaker
-
Building an allyesconfig doesn't reveal a hidden need
for any of these. Since module.h brings in the whole kitchen
sink, it just needlessly adds 30k+ lines to the cpp burden.Signed-off-by: Paul Gortmaker
-
These files are only exporting symbols, so they don't need
the full module.h header file. Previously they were getting
access to EXPORT_SYMBOL implicitly via overuse of module.h
from within other .h files, but that is being cleaned up.Signed-off-by: Paul Gortmaker
08 Oct, 2011
1 commit
-
The LEON MMU Model (SRMMU) does not implement MMu Table probing
in hardware, instead it is implemented in software. However the
software implementation does not return the PTE as it should which
always results in INVALID entires and the PROM mappings are not
inherited as they should during startup. The following patch
removes the masking of the PTE.Signed-off-by: Daniel Hellstrom
Signed-off-by: David S. Miller
30 Sep, 2011
1 commit
-
In the OF 'translations' property, the template TTEs in the mappings
never specify the executable bit. This is the case even though some
of these mappings are for OF's code segment.Therefore, we need to force the execute bit on in every mapping.
This problem can only really trigger on Niagara/sun4v machines and the
history behind this is a little complicated.Previous to sun4v, the sun4u TTE entries lacked a hardware execute
permission bit. So OF didn't have to ever worry about setting
anything to handle executable pages. Any valid TTE loaded into the
I-TLB would be respected by the chip.But sun4v Niagara chips have a real hardware enforced executable bit
in their TTEs. So it has to be set or else the I-TLB throws an
instruction access exception with type code 6 (protection violation).We've been extremely fortunate to not get bitten by this in the past.
The best I can tell is that the OF's mappings for it's executable code
were mapped using permanent locked mappings on sun4v in the past.
Therefore, the fact that we didn't have the exec bit set in the OF
translations we would use did not matter in practice.Thanks to Greg Onufer for helping me track this down.
Signed-off-by: David S. Miller
06 Aug, 2011
1 commit
-
arch/sparc/mm/init_64.c:1622:22: error: unused variable '__swapper_4m_tsb_phys_patch_end' [-Werror=unused-variable]
arch/sparc/mm/init_64.c:1621:22: error: unused variable '__swapper_4m_tsb_phys_patch' [-Werror=unused-variable]Signed-off-by: David S. Miller
05 Aug, 2011
1 commit
-
On sun4v this is basically required since we point the hypervisor and
the TSB walking hardware at these tables using physical addressing
too.Signed-off-by: David S. Miller
26 Jul, 2011
2 commits
-
Signed-off-by: David S. Miller
Signed-off-by: Peter Zijlstra
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With the recent mmu_gather changes that included generic RCU freeing of
page-tables, it is now quite straightforward to implement gup_fast() on
sparc64.This patch:
Remove the page table quicklists. They are pointless and make it harder
to use RCU page table freeing and share code with other architectures.BTW, this is the second time this has happened, see commit 3c936465249f
("[SPARC64]: Kill pgtable quicklists and use SLAB.")Signed-off-by: David S. Miller
Signed-off-by: Peter Zijlstra
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Jul, 2011
1 commit
-
…git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (123 commits)
perf: Remove the nmi parameter from the oprofile_perf backend
x86, perf: Make copy_from_user_nmi() a library function
perf: Remove perf_event_attr::type check
x86, perf: P4 PMU - Fix typos in comments and style cleanup
perf tools: Make test use the preset debugfs path
perf tools: Add automated tests for events parsing
perf tools: De-opt the parse_events function
perf script: Fix display of IP address for non-callchain path
perf tools: Fix endian conversion reading event attr from file header
perf tools: Add missing 'node' alias to the hw_cache[] array
perf probe: Support adding probes on offline kernel modules
perf probe: Add probed module in front of function
perf probe: Introduce debuginfo to encapsulate dwarf information
perf-probe: Move dwarf library routines to dwarf-aux.{c, h}
perf probe: Remove redundant dwarf functions
perf probe: Move strtailcmp to string.c
perf probe: Rename DIE_FIND_CB_FOUND to DIE_FIND_CB_END
tracing/kprobe: Update symbol reference when loading module
tracing/kprobes: Support module init function probing
kprobes: Return -ENOENT if probe point doesn't exist
...
15 Jul, 2011
1 commit
-
memblock_nid_range() is used to implement memblock_[try_]alloc_nid().
The generic version determines the range by walking early_node_map
with for_each_mem_pfn_range(). The generic version is defined __weak
to allow arch override.Currently, only sparc overrides it; however, with the previous update
to the generic implementation, there isn't much to be gained with arch
override. Sparc would behave exactly the same with the generic
implementation.This patch disallows arch override for memblock_nid_range() and make
both generic and sparc versions static.sparc is only compile tested.
Signed-off-by: Tejun Heo
Link: http://lkml.kernel.org/r/1310460395-30913-6-git-send-email-tj@kernel.org
Cc: "David S. Miller"
Cc: Yinghai Lu
Cc: Benjamin Herrenschmidt
Signed-off-by: H. Peter Anvin
06 Jul, 2011
1 commit
-
The function leon_flush_needed() is called only during bootup from another
__init function. Therefore, we can also add __init to leon_flush_needed().Signed-off-by: Matthias Rosenfelder
Acked-by: Daniel Hellstrom
Signed-off-by: David S. Miller
01 Jul, 2011
1 commit
-
The nmi parameter indicated if we could do wakeups from the current
context, if not, we would set some state and self-IPI and let the
resulting interrupt do the wakeup.For the various event classes:
- hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from
the PMI-tail (ARM etc.)
- tracepoint: nmi=0; since tracepoint could be from NMI context.
- software: nmi=[0,1]; some, like the schedule thing cannot
perform wakeups, and hence need 0.As one can see, there is very little nmi=1 usage, and the down-side of
not using it is that on some platforms some software events can have a
jiffy delay in wakeup (when arch_irq_work_raise isn't implemented).The up-side however is that we can remove the nmi parameter and save a
bunch of conditionals in fast paths.Signed-off-by: Peter Zijlstra
Cc: Michael Cree
Cc: Will Deacon
Cc: Deng-Cheng Zhu
Cc: Anton Blanchard
Cc: Eric B Munson
Cc: Heiko Carstens
Cc: Paul Mundt
Cc: David S. Miller
Cc: Frederic Weisbecker
Cc: Jason Wessel
Cc: Don Zickus
Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org
Signed-off-by: Ingo Molnar
08 Jun, 2011
1 commit
-
Semicolons are not necessary after switch/while/for/if braces
so remove them.Signed-off-by: Joe Perches
Signed-off-by: David S. Miller
25 May, 2011
3 commits
-
Fold all the mmu_gather rework patches into one for submission
Signed-off-by: Peter Zijlstra
Reported-by: Hugh Dickins
Cc: Benjamin Herrenschmidt
Cc: David Miller
Cc: Martin Schwidefsky
Cc: Russell King
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Richard Weinberger
Cc: Tony Luck
Cc: KAMEZAWA Hiroyuki
Cc: Mel Gorman
Cc: KOSAKI Motohiro
Cc: Nick Piggin
Cc: Namhyung Kim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Rework the sparc mmu_gather usage to conform to the new world order :-)
Sparc mmu_gather does two things:
- tracks vaddrs to unhash
- tracks pages to freeSplit these two things like powerpc has done and keep the vaddrs
in per-cpu data structures and flush them on context switch.The remaining bits can then use the generic mmu_gather.
Signed-off-by: Peter Zijlstra
Acked-by: David Miller
Cc: Benjamin Herrenschmidt
Cc: Martin Schwidefsky
Cc: Russell King
Cc: Paul Mundt
Cc: Jeff Dike
Cc: Richard Weinberger
Cc: Tony Luck
Cc: KAMEZAWA Hiroyuki
Cc: Hugh Dickins
Cc: Mel Gorman
Cc: KOSAKI Motohiro
Cc: Nick Piggin
Cc: Namhyung Kim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Architectures that implement their own show_mem() function did not pass
the filter argument to show_free_areas() to appropriately avoid emitting
the state of nodes that are disallowed in the current context. This patch
now passes the filter argument to show_free_areas() so those nodes are now
avoided.This patch also removes the show_free_areas() wrapper around
__show_free_areas() and converts existing callers to pass an empty filter.ia64 emits additional information for each node, so skip_free_areas_zone()
must be made global to filter disallowed nodes and it is converted to use
a nid argument rather than a zone for this use case.Signed-off-by: David Rientjes
Cc: Russell King
Cc: Tony Luck
Cc: Fenghua Yu
Cc: Kyle McMartin
Cc: Helge Deller
Cc: James Bottomley
Cc: "David S. Miller"
Cc: Guan Xuetao
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 May, 2011
1 commit
-
Adapt new API. Almost change is trivial, most important change are to
remove following like =operator.cpumask_t cpu_mask = *mm_cpumask(mm);
cpus_allowed = current->cpus_allowed;Because cpumask_var_t is =operator unsafe. These usage might prevent
kernel core improvement.No functional change.
Signed-off-by: KOSAKI Motohiro
Signed-off-by: David S. Miller
25 Mar, 2011
1 commit
-
Commit ddd588b5dd55 ("oom: suppress nodes that are not allowed from
meminfo on oom kill") moved lib/show_mem.o out of lib/lib.a, which
resulted in build warnings on all architectures that implement their own
versions of show_mem():lib/lib.a(show_mem.o): In function `show_mem':
show_mem.c:(.text+0x1f4): multiple definition of `show_mem'
arch/sparc/mm/built-in.o:(.text+0xd70): first defined hereThe fix is to remove __show_mem() and add its argument to show_mem() in
all implementations to prevent this breakage.Architectures that implement their own show_mem() actually don't do
anything with the argument yet, but they could be made to filter nodes
that aren't allowed in the current context in the future just like the
generic implementation.Reported-by: Stephen Rothwell
Reported-by: James Bottomley
Suggested-by: Andrew Morton
Signed-off-by: David Rientjes
Signed-off-by: Linus Torvalds
23 Mar, 2011
1 commit
-
Add a node parameter to alloc_thread_info(), and change its name to
alloc_thread_info_node()This change is needed to allow NUMA aware kthread_create_on_cpu()
Signed-off-by: Eric Dumazet
Acked-by: David S. Miller
Reviewed-by: Andi Kleen
Acked-by: Rusty Russell
Cc: Tejun Heo
Cc: Tony Luck
Cc: Fenghua Yu
Cc: David Howells
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Mar, 2011
1 commit
-
When we try to handle vmalloc faults, we can take a code
path which uses "code" before we actually set it.Amusingly gcc-3.3 notices this yet gcc-4.x does not.
Reported-by: Bob Breuer
Signed-off-by: David S. Miller
14 Jan, 2011
1 commit
-
pte alloc routines must wait for split_huge_page if the pmd is not present
and not null (i.e. pmd_trans_splitting). The additional branches are
optimized away at compile time by pmd_trans_splitting if the config option
is off. However we must pass the vma down in order to know the anon_vma
lock to wait for.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andrea Arcangeli
Acked-by: Rik van Riel
Acked-by: Mel Gorman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Jan, 2011
1 commit
-
We use "_start" in 64 bit - do the same in 32 bit.
It is always good to be consistent.Signed-off-by: Sam Ravnborg
Signed-off-by: David S. Miller
29 Oct, 2010
1 commit
-
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
kbuild: add ARCH=sparc32 target
sparc32: fix build failure on CONFIG_SPARC_LEON
sparc: Fixed random SPARC/LEON SMP CPU Stuck problem.
sparc32: remove CONFIG_HAVE_PERF_EVENTS option
sparc: don't #include asm/system.h in asm/jump_label.h
sparc32: Fix unaligned stack handling on trap return.
sparc: keep calling do_signal() as long as pending signals remain
28 Oct, 2010
1 commit
-
Christoph reported a nice splat which illustrated a race in the new stack
based kmap_atomic implementation.The problem is that we pop our stack slot before we're completely done
resetting its state -- in particular clearing the PTE (sometimes that's
CONFIG_DEBUG_HIGHMEM). If an interrupt happens before we actually clear
the PTE used for the last slot, that interrupt can reuse the slot in a
dirty state, which triggers a BUG in kmap_atomic().Fix this by introducing kmap_atomic_idx() which reports the current slot
index without actually releasing it and use that to find the PTE and delay
the _pop() until after we're completely done.Signed-off-by: Peter Zijlstra
Reported-by: Christoph Hellwig
Acked-by: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Oct, 2010
1 commit
-
Keep the current interface but ignore the KM_type and use a stack based
approach.The advantage is that we get rid of crappy code like:
#define __KM_PTE \
(in_nmi() ? KM_NMI_PTE : \
in_irq() ? KM_IRQ_PTE : \
KM_PTE0)and in general can stop worrying about what context we're in and what kmap
slots might be appropriate for that.The downside is that FRV kmap_atomic() gets more expensive.
For now we use a CPP trick suggested by Andrew:
#define kmap_atomic(page, args...) __kmap_atomic(page)
to avoid having to touch all kmap_atomic() users in a single patch.
[ not compiled on:
- mn10300: the arch doesn't actually build with highmem to begin with ][akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix up drivers/gpu/drm/i915/intel_overlay.c]
Acked-by: Rik van Riel
Signed-off-by: Peter Zijlstra
Acked-by: Chris Metcalf
Cc: David Howells
Cc: Hugh Dickins
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Steven Rostedt
Cc: Russell King
Cc: Ralf Baechle
Cc: David Miller
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Dave Airlie
Cc: Li Zefan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Oct, 2010
1 commit
-
When the rett stack checking code sees the stack is unaligned (in both
the sun4c and srmmu cases) it jumps to the window fault-in path.But that just tries to page the stack pages in, it doesn't do anything
special if the stack is misaligned.Therefore we essentially just loop forever in the trap return path.
Fix this by emitting a SIGILL in the stack fault-in code if the stack
is mis-aligned.Reported-by: Al Viro
Signed-off-by: David S. Miller
25 Oct, 2010
1 commit
-
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
mtd/m25p80: add support to parse the partitions by OF node
of/irq: of_irq.c needs to include linux/irq.h
of/mips: Cleanup some include directives/files.
of/mips: Add device tree support to MIPS
of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
of/device: Rework to use common platform_device_alloc() for allocating devices
of/xsysace: Fix OF probing on little-endian systems
of: use __be32 types for big-endian device tree data
of/irq: remove references to NO_IRQ in drivers/of/platform.c
of/promtree: add package-to-path support to pdt
of/promtree: add of_pdt namespace to pdt code
of/promtree: no longer call prom_ functions directly; use an ops structure
of/promtree: make drivers/of/pdt.c no longer sparc-only
sparc: break out some PROM device-tree building code out into drivers/of
of/sparc: convert various prom_* functions to use phandle
sparc: stop exporting openprom.h header
powerpc, of_serial: Endianness issues setting up the serial ports
of: MTD: Fix OF probing on little-endian systems
of: GPIO: Fix OF probing on little-endian systems
13 Oct, 2010
1 commit
-
We need to round memory regions correctly -- specifically, we need to
round reserved region in the more expansive direction (lower limit
down, upper limit up) whereas usable memory regions need to be rounded
in the more restrictive direction (lower limit up, upper limit down).This introduces two set of inlines:
memblock_region_memory_base_pfn()
memblock_region_memory_end_pfn()
memblock_region_reserved_base_pfn()
memblock_region_reserved_end_pfn()Although they are antisymmetric (and therefore are technically
duplicates) the use of the different inlines explicitly documents the
programmer's intention.The lack of proper rounding caused a bug on ARM, which was then found
to also affect other architectures.Reported-by: Russell King
Signed-off-by: Yinghai Lu
LKML-Reference:
Cc: Jeremy Fitzhardinge
Signed-off-by: H. Peter Anvin
09 Oct, 2010
1 commit
-
Rather than passing around ints everywhere, use the
phandle type where appropriate for the various functions
that talk to the PROM.Signed-off-by: Andres Salomon
Acked-by: David S. Miller
Signed-off-by: Grant Likely
